CN203430500U - Rotary drilling rig pressurizing control system - Google Patents
Rotary drilling rig pressurizing control system Download PDFInfo
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- CN203430500U CN203430500U CN201320513841.3U CN201320513841U CN203430500U CN 203430500 U CN203430500 U CN 203430500U CN 201320513841 U CN201320513841 U CN 201320513841U CN 203430500 U CN203430500 U CN 203430500U
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Abstract
The utility model discloses a rotary drilling rig pressurizing control system which comprises a left mast oil cylinder (11), a right mast oil cylinder (16) and a pressurizing oil cylinder (20). The rotary drilling rig pressurizing control system further comprises a detecting device and a controller, wherein the detecting device is used for detecting the pressure values of rodless cavities of the left mast oil cylinder (11) and the right mast oil cylinder (16), and the controller is used for processing the pressure value of the rodless cavity of the left mast oil cylinder (11) and pressure value of the rodless cavity of the right mast oil cylinder (16) to obtain the pressure difference value of the rodless cavity of the left mast oil cylinder (11) and the rodless cavity of the right mast oil cylinder (16), and used for controlling the pressure of a rodless cavity of the pressurizing oil cylinder (20) according to the relationship between the preset pressure difference value and the pressure of the rodless cavity of the pressurizing oil cylinder (20). The rotary drilling rig pressurizing control system can automatically adjust the applying pressure and pressurizing speed of the pressurizing oil cylinder to a power head, reduce the unbalanced load of drill pipes, masts and the like due to impaction load and unbalanced load of a drill bit, and reduce vibration frequency and avoid manual mistaken judgment or operation delay and other factors so that operating mechanisms are not damaged and personal and equipment safety accidents caused by falling of parts from a high place do not occur.
Description
Technical field
The utility model relates to technical field of engineering machinery, relates in particular to rotary drilling rig pressurizing control system.
Background technology
Rotary drilling rig is the pile foundation equipment comparatively widely that uses at present, refer to Fig. 1, its course of work is, drill bit 4 declines and reaches a hole 2 bottom job positions with drilling rod 1,1 rotation of fluid motor-driven drilling rod, drilling rod 1 is connected with drill bit 4 by connecting square toes, and drilling rod 1 drives brill tooth 5 cuttings of drill bit 4 and creeps into operation.In drilling condition, pressurization oil cylinder applies a certain size downward pressure to unit head, and the piston rod of pressurization oil cylinder stretches out and drives unit head, drilling rod, drill bit to move down.
The brill tooth 5 of drill bit 4 meets following two kinds of situations in cutting and drilling process: one, part cutting face A is soil layer, and another part cutting face B is rock; Two, part cutting face A is hollow, when the cut-in without ball bevel B of another is rock, refers to Fig. 2, because boring tooth 5, is symmetrical along the drill bit cross section center of circle, when the cutting of the cutting face of different geology (pan soil, rock), bores tooth 5 at the component Fb of level, vertical direction
1, Fb
2with Fa
1, Fa
2differ in size, drill bit 4 can produce serious unbalance loading.The size of unbalance loading is relevant with following factor: one, the hardness of two kinds of geological stratifications, intensity differ larger, and the suffered partial load of drill bit 4 is just larger; Two, the plus-pressure of pressurization oil cylinder is larger, and the suffered partial load of drill bit 4 is just larger; Three, the rotary speed of drill bit 4 is faster, and the suffered partial load of drill bit 4 is just larger.Drill bit 4 unbalance loadings can produce vibration, and drilling bucket 3, drilling rod 1, unit head and arbitrary-movement articulator also can bear corresponding unbalance loading load and vibration accordingly, and corresponding structural member is damaged.Partial load is larger, the vibration frequency producing is higher, the suffered shock loading of structural member is just larger, when serious, can cause drilling bucket 3 to snap with the square toes that drilling rod 1 is connected, even rupture, cause drill bit " buried " or drop from high-altitude, meanwhile, cause that mast guide rail snaps, distortion, the U-shaped groove cracking of arbitrary-movement articulator, distortion Deng，Zhu operating mechanism cannot work.
Utility model content
The technical problems to be solved in the utility model is to provide and a kind ofly prevents drill bit unbalance loading and damage the pressurizing control system of structural member.
The utility model provides a kind of rotary drilling rig pressurizing control system, comprises left mast oil cylinder, right mast oil cylinder and pressurization oil cylinder, also comprises: checkout gear, for detection of the rodless cavity force value of left mast oil cylinder and right mast oil cylinder; Controller, left mast oil cylinder rodless cavity force value and right mast oil cylinder rodless cavity force value are processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder and right mast oil cylinder, and according to the relation between default pressure difference and the pressure of pressurization oil cylinder rodless cavity, control the pressure of pressurization oil cylinder rodless cavity.
Preferably, described checkout gear comprises the first pressure sensor and the second pressure sensor being connected with the rodless cavity of described left mast oil cylinder and right mast oil cylinder respectively.
Preferably, on described the first pressure sensor and the second pressure sensor, be provided with alarm; When described pressure difference reaches setting value, described alarm equipment alarm.
Preferably, described system also comprises the first control valve that is connected and the pressure of this rodless cavity is regulated with the rodless cavity of described pressurization oil cylinder, described the first control valve comprises a control end being connected with described controller, and described controller is controlled the pressure of the rodless cavity of pressurization oil cylinder by described the first control valve.
Preferably, described the first control valve is electric proportional pressure control valve, and described electric proportional pressure control valve comprises and the oil-in being communicated with of described pressurization oil cylinder rodless cavity, the oil-out being communicated with fuel tank and the control end that is electrically connected to described controller.
Preferably, described system also comprises power head motor, is the variable pump of power head motor fuel feeding, the second control valve of being connected and this variable pump delivery is regulated with described variable pump.
Preferably, described the second control valve is the electric proportional pressure-reducing valve being connected with described variable pump, described variable pump comprises the adjusting oil circuit that its discharge capacity is regulated, and described electric proportional pressure-reducing valve comprises the oil-in being connected with the oil-out of described variable pump, the oil-out being connected with described adjusting oil circuit and the control end being connected with described controller.
Preferably, described variable pump comprises servo-cylinder and built-in reversal valve, described adjusting oil circuit comprises node A, the Node B being connected with described electric proportional pressure-reducing valve being communicated with the oil-out of described variable pump and the node C being communicated with the rodless cavity of described servo-cylinder, described built-in reversal valve comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve and one of them hydraulic control end are connected with described node A, wherein another hydraulic control end is connected with described Node B, and its oil return opening is communicated with fuel tank.
The rotary drilling rig pressurizing control system that the utility model provides can regulate pressurization oil cylinder exerting pressure and pressing speed to unit head automatically, the unbalance loading of the drilling rod that reduction causes because of shock loading and the partial load of drill bit, mast etc., reduce vibration frequency, avoided, because of factors such as artificial error in judgement or operation delay, causing operating mechanism to damage and because of part of damage falling from high altitude, causing the generation of the person, device security accident.
Accompanying drawing explanation
Fig. 1 is the drill bit construction operation schematic diagram of prior art;
Fig. 2 is the stressed schematic diagram of brill tooth in Fig. 1;
Fig. 3 is rotary drilling rig structural representation;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is rotary drilling rig compression system schematic diagram of the present utility model.
Symbol description
10, mast 11, left mast oil cylinder 12, the first pressure sensor 13, the second equalizing valve
14, connect rotating disk 16, right mast oil cylinder 17, the second pressure sensor 18, the 3rd equalizing valve
20, pressurization oil cylinder 22, the first equalizing valve 24, electric proportional pressure control valve 25, reversal valve
26, hydraulic pump 30, arbitrary-movement articulator 40, unit head 42, power head motor
43, selector valve 44, variable pump 440, servo-cylinder 442, built-in reversal valve
446, regulate oil circuit 46, electric proportional pressure-reducing valve 50, drilling rod 60, drill bit
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
In the utility model, in the situation that not doing contrary explanation, the noun of locality of use is for the mutual alignment relationship description word between each parts under rotary drilling rig normal operating conditions as " upper and lower ".
Usually, rotary drilling rig comprises mast 10, left mast oil cylinder 11, right mast oil cylinder 16, drilling rod 50, controls the parts such as master winch (not shown), the arbitrary-movement articulator 30 being connected with drilling rod 50 and unit head 40, the pressurization oil cylinder 20 pressurizeing to unit head 40 and drill bit 60 that drilling rod 50 rises or declines.Revolve to dig and bore the course of work and refer to the course of work of digging brill of revolving of describing in background technology, do not repeat them here.
Refer to Fig. 3 and Fig. 4, mast 10 can be done front, rear, left and right four direction rotation within the specific limits around connecting rotating disk 14, and connect rotating disk 14 and can only transmit power within the specific limits, and can not carry-over moment (moment of torsion or torque).One end of the piston rod of left mast oil cylinder 11, right mast oil cylinder 16 is connected with mast 10, and the other end is connected with jib lubbing mechanism assembly.When mast 10 does not deflect, left mast oil cylinder 11 is identical with the pressure of the rodless cavity of right mast oil cylinder 16, and pressure difference is between the two zero.Can not carry-over moment owing to connecting rotating disk 14, when the forward and backward torsion of mast 10 or left and right deflection, will cause the wherein cylinder piston rod tension in right mast oil cylinder 16 and left mast oil cylinder 11, and another cylinder piston rod pressurized; The rodless cavity pressure decreased of the oil cylinder of piston rod tension, the rodless cavity pressure of the oil cylinder of piston rod pressurized raises, and finally causes the rodless cavity of right mast oil cylinder 16 and left mast oil cylinder 11 to produce new pressure difference.
The utility model embodiment discloses a kind of rotary drilling rig pressurizing control system, this system comprises left mast oil cylinder 11, right mast oil cylinder 16 and pressurization oil cylinder 20, also comprise: checkout gear, for detection of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16; Controller, for the force value of the rodless cavity of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16 is processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, and according to the relation between default pressure difference and the pressure of pressurization oil cylinder 20 rodless cavities, control the pressure of pressurization oil cylinder 20 rodless cavities.The utility model detects the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16 automatically by checkout gear, controller is automatically processed the force value of obtaining and is obtained corresponding pressure difference, and according to this pressure difference, automatically control the pressure of pressurization oil cylinder 20 rodless cavities, the pressure process of 20 pairs of unit heads 40 of oil cylinder of making to pressurize is controlled automatically, reliability is high, automaticity is high, greatly reduces equipment operator's labour intensity.
It should be noted that, described pressure difference refers to the absolute value of difference of pressure of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16.Pass between the pressure of the rodless cavity of described pressure difference and pressurization oil cylinder 20 is: described pressure difference becomes large, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly diminishes, and described pressure difference diminishes, and the pressure of the rodless cavity of the oil cylinder 20 that pressurizes correspondingly becomes large.
Described checkout gear is for detection of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, therefore, as long as described checkout gear has detected pressures and the force value of detection is sent to the function of controller, for example, can be but be not limited to the pressure sensor in the present embodiment.Particularly, described checkout gear comprises the first pressure sensor 12 and the second pressure sensor 17, and described the first pressure sensor 12 is connected with the rodless cavity of described left mast oil cylinder 11, for detecting in real time the force value of this rodless cavity; Described the second pressure sensor 17 is connected with the rodless cavity of described right mast oil cylinder 16, for detecting in real time the force value of this rodless cavity.Described the first pressure sensor 12 and the second pressure sensor 17 are sent to controller by the force value of detection, in the present embodiment, on the first pressure sensor 12 and the second pressure sensor 17, be also provided with alarm, when described pressure difference reaches setting value, alarm equipment alarm, alert.
In order to realize, the pressure of the rodless cavity of described pressurization oil cylinder 20 is controlled, described pressurizing control system also comprises the first control valve that is connected and the pressure of this rodless cavity is controlled with the rodless cavity of described pressurization oil cylinder 20, and described the first control valve comprises a control end being connected with described controller, the oil revolving end being connected with fuel tank, the oil inlet end being communicated with the in-line of described pressurization oil cylinder 20 rodless cavities.Described controller is according to the relation between default pressure difference and the pressure of pressurization oil cylinder 20 rodless cavities, send a control signal to the control end of described the first control valve, described the first control valve is controlled the pressure of the in-line of pressurization oil cylinder 20 rodless cavities according to this control signal.When described pressure difference is larger, hydraulic oil on the in-line of the rodless cavity of increase pressurization oil cylinder 20 enters the flow of fuel tank by this first control valve, the pressure of rodless cavity of oil cylinder 20 of making to pressurize reduces, in like manner, when described pressure difference hour, the hydraulic oil that reduces to pressurize on the in-line of rodless cavity of oil cylinder 20 enters the flow of fuel tank by this first control valve, the pressure of the rodless cavity of the oil cylinder 20 that makes to pressurize increases.
Be understandable that, this first control valve can be the valve with the arbitrary form of above-mentioned functions, for example, can be pile-up valve, overflow valve, in the present embodiment, described the first control valve is electric proportional pressure control valve 24, the oil-in of described electric proportional pressure control valve 24 is connected with the in-line of the rodless cavity of described pressurization oil cylinder 20, the control end of described electric proportional pressure control valve 24 is electrically connected to described controller, this control end is the control end of the first control valve, and the oil-out of described electric proportional pressure control valve 24 is connected with fuel tank.Described controller is according to the relation between default pressure difference and the pressure of pressurization oil cylinder 20 rodless cavities, convert described pressure difference signal to control end that the signal of telecommunication is sent to described electric proportional pressure control valve 24, the spool aperture of described electric proportional pressure control valve 24 and the electric current of its control end are proportional, when described pressure difference is larger, spool aperture is large, by these electricity proportional pressure control valve 24 overflows, the flow to fuel tank increases hydraulic oil on the in-line of the rodless cavity of corresponding pressurization oil cylinder 20, the pressure of rodless cavity of oil cylinder 20 of making to pressurize reduces, cause pressurizeing oil cylinder 20 to unit head 40 and then just less to the moulding pressure of drill bit 60, the speed of pressurization is also less downwards simultaneously, the vibration that unbalance loading produces is just less.In like manner, when described pressure difference hour, spool aperture is little, by these electricity proportional pressure control valve 24 overflows, the flow to fuel tank reduces hydraulic oil on the in-line of the rodless cavity of corresponding pressurization oil cylinder 20, the pressure of rodless cavity of oil cylinder 20 of making to pressurize increases, and the oil cylinder 20 that causes pressurizeing is to unit head 40 and then just larger to the moulding pressure of drill bit 60.
Affect drill bit 60 unbalance loadings and vibrative factor except the moulding pressure of pressurization oil cylinder 20, also have the velocity of rotation of unit head 40.Therefore, described pressurizing control system also comprises power head motor 42, is the variable pump 44 of power head motor 42 fuel feeding, the second control valve of being connected and the discharge capacity of this variable pump 44 is controlled with described variable pump 44, and described variable pump 44 comprises the adjusting oil circuit 446 that its discharge capacity is regulated.Controller, according to the relation between default pressure difference and the discharge capacity of variable pump 44, regulates the discharge capacity of described variable pump 44.The discharge capacity of described variable pump 44 changes, the rotating speed of power head motor 42 is changed, also can there is respective change in the rotating speed of unit head 40 and drill bit 60, make control system of the present utility model to change the rotating speed of unit head 40 and drill bit 60 is regulated automatically according to the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, reliability is high, automaticity is high, greatly reduces equipment operator's labour intensity.
Described pressure difference and for the pass between the discharge capacity of the variable pump 44 of power head motor 42 fuel feeding be: described pressure difference becomes large, and the discharge capacity of described variable pump 44 correspondingly diminishes, and described pressure difference diminishes, and it is large that the discharge capacity of described variable pump 44 correspondingly becomes.
Be understandable that, this second control valve can be the valve with the arbitrary form of above-mentioned functions, for example, can be pile-up valve, overflow valve, reducing valve, in the present embodiment, described the second control valve is preferably electric proportional pressure-reducing valve 46, and electric proportional pressure-reducing valve 46 comprises the oil-in being connected with the oil-out of described variable pump 44, the oil-out being connected with the adjusting oil circuit 446 of described variable pump 44 and the control end being connected with described controller, and this control end is the control end of described the second control valve.
Refer to Fig. 5, Fig. 5 is the hydraulic schematic diagram of the utility model embodiment, existing in conjunction with this hydraulic schematic diagram, and the course of work of the present utility model is described in detail.Described pressurizing control system is also included as described pressurization oil cylinder 20, the hydraulic pump 26 of left mast oil cylinder 11 and right mast oil cylinder 16 fuel feeding, and be separately positioned on described hydraulic pump 26 and pressurization oil cylinder 20, reversal valve 25 between left mast oil cylinder 11 and right mast oil cylinder 16, , on oil circuit between described pressurization oil cylinder 20 and hydraulic pump 26, on oil circuit on oil circuit between left mast oil cylinder 11 and hydraulic pump 26 and between right mast oil cylinder 16 and hydraulic pump 26, be provided with reversal valve 25, described reversal valve 25 is optionally connected to the hydraulic oil of hydraulic pump 26 outputs rod chamber or the rodless cavity of corresponding oil cylinder.Further, on the oil circuit between the rod chamber of described pressurization oil cylinder 20 and corresponding reversal valve 25, be provided with the first equalizing valve 22, described the first equalizing valve 22 comprises the control port being connected with the rodless cavity of described pressurization oil cylinder 20; On oil circuit between the rod chamber of described left mast oil cylinder 11 and rodless cavity and corresponding reversal valve 25, be provided with the second equalizing valve 13, two second equalizing valves 13 and there is interlock function; On oil circuit between the rod chamber of described right mast oil cylinder 16 and rodless cavity and corresponding reversal valve 25, be provided with the 3rd equalizing valve 18, two second equalizing valves 13 and there is interlock function.
Described the first pressure sensor 12 is connected on the rodless cavity and the oil circuit between the second equalizing valve 13 of described left mast oil cylinder 11, and for the force value of the rodless cavity of left mast oil cylinder 11 described in Real-Time Monitoring, and this force value is sent to controller.Described the second pressure sensor 17 is connected on the rodless cavity and the oil circuit between the 3rd equalizing valve 18 of described right mast oil cylinder 16, and for the force value of the rodless cavity of right mast oil cylinder 16 described in Real-Time Monitoring, and this force value is sent to controller.
The oil-in of described electric proportional pressure control valve 24 is connected on the rodless cavity and the oil circuit between the first equalizing valve 22 of described pressurization oil cylinder 20, and its oil-out is connected to fuel tank, and its control end is connected to controller.When the pressure difference of the described left mast oil cylinder 11 of controller acquisition and the rodless cavity of right mast oil cylinder 16 becomes large, illustrate that drill bit 60 has produced unbalance loading load, controller converts this pressure difference to current value, and this current value is sent to the control end of electric proportional pressure control valve 24, the spool aperture of electricity proportional pressure control valve 24 becomes large, the pressure that makes to pressurize in oil cylinder 20 rodless cavities reduces, and then reduces the moulding pressure of 20 pairs of unit heads 40 of oil cylinder that pressurizes, so that reduces the vibration that drill bit 60 brings because of unbalance loading load.In like manner, when the pressure difference of the described left mast oil cylinder 11 of controller acquisition and the rodless cavity of right mast oil cylinder 16 diminishes, illustrate that drill bit 60 unbalance loading load are less, the spool aperture of electricity proportional pressure control valve 24 diminishes, the pressure that makes to pressurize in oil cylinder 20 rodless cavities increases, thereby the suitable moulding pressure that increases by 20 pairs of unit heads 40 of pressurization oil cylinder, drill bit 60 can reasonably creep into operation under pressure.
Further, on oil circuit between described variable pump 44 and described power head motor 42, be provided with selector valve 43, described selector valve 43 is optionally connected to the hydraulic oil of variable pump 44 outputs the opposite end of power head motor 42, makes power head motor 42 forward or reverse.The oil-in of described electric proportional pressure-reducing valve 46 is connected on the oil-out and the oil circuit between described selector valve 43 of described variable pump 44, and the oil-out of described electric proportional pressure-reducing valve 46 is connected on described adjusting oil circuit 446.Particularly, described variable pump 44 comprises built-in swash plate servo-cylinder 440 and built-in reversal valve 442, and described adjusting oil circuit 446 comprises node A, the Node B being connected with described electric proportional pressure-reducing valve 46 and the node C being communicated with the rodless cavity of described servo-cylinder 440 being communicated with the oil-out of described variable pump 44.Described built-in reversal valve 442 comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve 442 and one of them hydraulic control end are connected with described node A, wherein another hydraulic control end is connected with described Node B, its oil return opening is communicated with fuel tank, the hydraulic control end being connected with described Node B is provided with spring, described Node B and spring force be the aperture to the built-in reversal valve 442 of pressure co-controlling of another hydraulic control end to the pressure of this hydraulic control end and node A, and then control enters the pressure of described node C by node A, control the pressure of the rodless cavity that enters servo-cylinder 440, and then reach the object of the discharge capacity of control variables pump 44.In said process, controller is according to the relation between default pressure difference and the discharge capacity of variable pump 44, convert described pressure difference signal to control end that the signal of telecommunication is sent to described electric proportional pressure-reducing valve 46, control end is controlled the aperture of this electricity proportional pressure-reducing valve 46, and then control the pressure of Node B, reach the object of the aperture of controlling built-in reversal valve 442.
The utility model embodiment also discloses a kind of rotary drilling rig pressure control method, and the method comprises the following steps: the force value of obtaining respectively the left mast oil cylinder 11 of described rotary drilling rig and the rodless cavity of right mast oil cylinder 16; Controller is processed the force value of the rodless cavity of the force value of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, and obtains the pressure difference of the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16; According to the relation between the pressure of the rodless cavity of default pressure difference and pressurization oil cylinder 20, control the pressure of pressurization oil cylinder 20 rodless cavities.
Further, this pressure control method also comprises according to default pressure difference and is the relation between the discharge capacity of the variable pump 44 of power head motor 42 fuel feeding, the discharge capacity of control variables pump 44.The discharge capacity of variable pump 44 is relevant with the rotating speed of power head motor 42, and the rotating speed of power head motor 42 is relevant with the rotating speed of unit head 40, and the discharge capacity of variable pump 44 is larger, and unit head 40 rotating speeds are larger, and correspondingly, the rotating speed of drill bit 60 is higher.Therefore, can to the discharge capacity of variable pump 44, control according to described pressure difference, making can be according to the pressure difference in the rodless cavity of left mast oil cylinder 11 and right mast oil cylinder 16, automatically regulate drill bit 60 rotating speeds, reduce shock loading and the partial load of drill bit 60, reduce vibration frequency, avoided, because of factors such as artificial error in judgement or operation delay, causing operating mechanism to damage and because of part of damage falling from high altitude, causing the generation of the person, device security accident.
It should be noted that, controller is according to the relation between the pressure of the rodless cavity of default pressure difference and pressurization oil cylinder 20, control the step of pressure of pressurization oil cylinder 20 rodless cavities and controller according to default pressure difference and be the relation between the discharge capacity of variable pump 44 of power head motor 42 fuel feeding, between the step of the discharge capacity of control variables pump 44, there is no sequencing, , it can be first to control after the pressure of rodless cavity of pressurization oil cylinder 20 discharge capacity of control variables pump 44 again that controller is controlled, also can be the pressure of rodless cavity and the discharge capacity of variable pump 44 that controller is controlled pressurization oil cylinder 20 simultaneously, can also be that controller controls can be the pressure of controlling again the rodless cavity of pressurization oil cylinder 20 after the discharge capacity of first control variables pump 44.
Below describe by reference to the accompanying drawings a preferred embodiment of the present utility model in detail, still, be not limited to the detail in above-mentioned embodiment.Within the scope of technical conceive of the present utility model, can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Claims (8)
1. rotary drilling rig pressurizing control system, comprise left mast oil cylinder (11), right mast oil cylinder (16) and pressurization oil cylinder (20), it is characterized in that, described rotary drilling rig pressurizing control system also comprises: checkout gear, for detection of the force value of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16); Controller, force value to the rodless cavity of the force value of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16) is processed, obtain the pressure difference of the rodless cavity of left mast oil cylinder (11) and right mast oil cylinder (16), and according to the relation between default pressure difference and the pressure of pressurization oil cylinder (20) rodless cavity, control the pressure of the rodless cavity of pressurization oil cylinder (20).
2. rotary drilling rig pressurizing control system as claimed in claim 1, it is characterized in that, described checkout gear comprises the first pressure sensor (12) and the second pressure sensor (17) being connected with the rodless cavity of described left mast oil cylinder (11) and right mast oil cylinder (16) respectively.
3. rotary drilling rig pressurizing control system as claimed in claim 2, is characterized in that, on described the first pressure sensor (12) and the second pressure sensor (17), is provided with alarm; When described pressure difference reaches setting value, described alarm equipment alarm.
4. rotary drilling rig pressurizing control system as claimed in claim 2, it is characterized in that, described system also comprises the first control valve that is connected and the pressure of this rodless cavity is regulated with the rodless cavity of described pressurization oil cylinder (20), described the first control valve comprises a control end being connected with described controller, and described controller is controlled the pressure of the rodless cavity of pressurization oil cylinder by described the first control valve.
5. rotary drilling rig pressurizing control system as claimed in claim 4, it is characterized in that, described the first control valve is electric proportional pressure control valve (24), and described electric proportional pressure control valve (24) comprises and the oil-in being communicated with of described pressurization oil cylinder (20) rodless cavity, the oil-out being communicated with fuel tank and the control end that is electrically connected to described controller.
6. rotary drilling rig pressurizing control system as claimed in claim 1, it is characterized in that, described system also comprises power head motor (42), is the variable pump (44) of power head motor (42) fuel feeding, the second control valve of being connected and the discharge capacity of this variable pump (44) is regulated with described variable pump (44).
7. rotary drilling rig pressurizing control system as claimed in claim 6, it is characterized in that, described the second control valve is the electric proportional pressure-reducing valve (46) being connected with described variable pump (44), described variable pump (44) comprises the adjusting oil circuit (446) that its discharge capacity is regulated, and described electric proportional pressure-reducing valve (46) comprises the oil-in being connected with the oil-out of described variable pump (44), the oil-out being connected with described adjusting oil circuit (446) and the control end being connected with described controller.
8. rotary drilling rig pressurizing control system as claimed in claim 7, it is characterized in that, described variable pump (44) comprises servo-cylinder (440) and built-in reversal valve (442), described adjusting oil circuit (446) comprises the node A being communicated with the oil-out of described variable pump (44), the Node B being connected with described electric proportional pressure-reducing valve (46), and the node C being communicated with the rodless cavity of described servo-cylinder (440), described built-in reversal valve (442) comprises two hydraulic control ends, oil-in and oil return opening, the oil-in of described built-in reversal valve (442) and one of them hydraulic control end are connected with described node A, wherein another hydraulic control end is connected with described Node B, its oil return opening is communicated with fuel tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320513841.3U CN203430500U (en) | 2013-08-21 | 2013-08-21 | Rotary drilling rig pressurizing control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320513841.3U CN203430500U (en) | 2013-08-21 | 2013-08-21 | Rotary drilling rig pressurizing control system |
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| CN203430500U true CN203430500U (en) | 2014-02-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437754A (en) * | 2013-08-21 | 2013-12-11 | 上海中联重科桩工机械有限公司 | Pressurization control method and pressurization control system for rotary drilling rig |
| CN110273872A (en) * | 2019-07-18 | 2019-09-24 | 陈福团 | A kind of hydraulic system for vibration hammer |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN113108688A (en) * | 2021-05-21 | 2021-07-13 | 北京三一智造科技有限公司 | Rotary drilling rig, and method and device for detecting vibration characteristic of mast in rotary drilling rig |
| CN113107352A (en) * | 2021-05-18 | 2021-07-13 | 恒天九五重工有限公司 | Rock-entering control device and method for rotary drilling rig |
-
2013
- 2013-08-21 CN CN201320513841.3U patent/CN203430500U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437754A (en) * | 2013-08-21 | 2013-12-11 | 上海中联重科桩工机械有限公司 | Pressurization control method and pressurization control system for rotary drilling rig |
| CN103437754B (en) * | 2013-08-21 | 2015-09-30 | 上海中联重科桩工机械有限公司 | Rotary drilling rig pressure control method and pressurizing control system |
| CN110273872A (en) * | 2019-07-18 | 2019-09-24 | 陈福团 | A kind of hydraulic system for vibration hammer |
| CN112727435A (en) * | 2020-12-31 | 2021-04-30 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN112727435B (en) * | 2020-12-31 | 2023-09-01 | 恒天九五重工有限公司 | Intelligent rock entering control device and method for rotary drilling rig |
| CN113107352A (en) * | 2021-05-18 | 2021-07-13 | 恒天九五重工有限公司 | Rock-entering control device and method for rotary drilling rig |
| CN113108688A (en) * | 2021-05-21 | 2021-07-13 | 北京三一智造科技有限公司 | Rotary drilling rig, and method and device for detecting vibration characteristic of mast in rotary drilling rig |
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